/**
* {@inheritdoc}
*/
public function sortResults(Result $a, Result $b)
{
if ($a->isActive() == $b->isActive()) {
return 0;
}
return $a->isActive() ? -1 : 1;
}
/**
* {@inheritdoc}
*/
public function sortResults(Result $a, Result $b)
{
if ($a->getCount() == $b->getCount()) {
return 0;
}
return $a->getCount() < $b->getCount() ? -1 : 1;
}
/**
* {@inheritdoc}
*/
public function build()
{
$parent_facet_results = [];
/** @var \Drupal\facets\Utility\FacetsDateHandler $date_handler */
$date_handler = \Drupal::getContainer()->get('facets.utility.date_handler');
// Gets base facet query, adds facet field and filters.
/* @var \Drupal\core_search_facets\Plugin\CoreSearchFacetSourceInterface $facet_source */
$facet_source = $this->facet->getFacetSource();
$query_info = $facet_source->getQueryInfo($this->facet);
/** @var \Drupal\core_search_facets\FacetsQuery $facet_query */
$facet_query = $facet_source->getFacetQueryExtender();
$facet_query->addFacetField($query_info);
foreach ($query_info['joins'] as $table_alias => $join_info) {
$facet_query->addFacetJoin($query_info, $table_alias);
}
if ($facet_query->getSearchExpression()) {
// Executes query, iterates over results.
$result = $facet_query->execute();
foreach ($result as $record) {
$raw_values[$record->value] = $record->count;
}
ksort($raw_values);
// Gets active facets, starts building hierarchy.
$parent = NULL;
$gap = NULL;
$last_parent = NULL;
foreach ($this->facet->getActiveItems() as $value => $item) {
if ($active_item = $date_handler->extractActiveItems($item)) {
$date_gap = $date_handler->getDateGap($active_item['start']['iso'], $active_item['end']['iso']);
$gap = $date_handler->getNextDateGap($date_gap, $date_handler::FACETS_DATE_MINUTE);
$last_parent = '[' . $active_item['start']['iso'] . ' TO ' . $active_item['end']['iso'] . ']';
$result = new Result($last_parent, $date_handler->formatTimestamp($active_item['start']['timestamp'], $date_gap), NULL);
$result->setActiveState(TRUE);
// Sets the children for the current parent..
if ($parent) {
$parent->setChildren($result);
} else {
$parent = $parent_facet_results[] = $result;
}
}
}
// Mind the gap! Calculates gap from min and max timestamps.
$timestamps = array_keys($raw_values);
if (is_null($parent)) {
if (count($raw_values) > 1) {
$gap = $date_handler->getTimestampGap(min($timestamps), max($timestamps));
} else {
$gap = $date_handler::FACETS_DATE_HOUR;
}
}
// Converts all timestamps to dates in ISO 8601 format.
$dates = [];
foreach ($timestamps as $timestamp) {
$dates[$timestamp] = $date_handler->isoDate($timestamp, $gap);
}
// Treat each date as the range start and next date as the range end.
$range_end = [];
$previous = NULL;
foreach (array_unique($dates) as $date) {
if (!is_null($previous)) {
$range_end[$previous] = $date_handler->getNextDateIncrement($previous, $gap);
}
$previous = $date;
}
$range_end[$previous] = $date_handler->getNextDateIncrement($previous, $gap);
$facet_results = [];
foreach ($raw_values as $value => $count) {
$new_value = '[' . $dates[$value] . ' TO ' . $range_end[$dates[$value]] . ']';
// Avoid to repeat the last value.
if ($new_value === $last_parent) {
$this->facet->setResults($parent_facet_results);
return $this->facet;
}
// Groups dates by the range they belong to.
/** @var \Drupal\facets\Result\Result $last_element */
$last_value = end($facet_results);
if ($last_value) {
if ($new_value != $last_value->getRawValue()) {
$facet_results[] = new Result($new_value, $date_handler->formatTimestamp($value, $gap), $count);
} else {
$last_value->setCount($last_value->getCount() + 1);
}
} else {
$facet_results[] = new Result($new_value, $date_handler->formatTimestamp($value, $gap), $count);
}
}
// Populate the parent with children.
$parent = end($parent_facet_results);
if ($parent instanceof ResultInterface) {
foreach ($facet_results as $result) {
$parent->setChildren($result);
$this->facet->setResults($parent_facet_results);
}
} else {
// Set results directly when missing parents.
$this->facet->setResults($facet_results);
}
}
return $this->facet;
}
/**
* {@inheritdoc}
*/
public function sortResults(Result $a, Result $b)
{
return strnatcasecmp($a->getRawValue(), $b->getRawValue());
}
